384 lines
10 KiB
C
384 lines
10 KiB
C
/* $NetBSD: asc.c,v 1.5 2002/03/10 15:47:45 bjh21 Exp $ */
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/*
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* Copyright (c) 2001 Richard Earnshaw
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* All rights reserved.
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* Copyright (c) 1996 Mark Brinicombe
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* Copyright (c) 1982, 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from:ahsc.c
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*/
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/*
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* Driver for the Acorn SCSI card using the SBIC (WD33C93A) generic driver
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*
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* Thanks to Acorn for supplying programming information on this card.
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*/
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/* #define ASC_DMAMAP_DEBUG */
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/* #define DEBUG */
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#include "opt_ddb.h"
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#include <sys/param.h>
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__KERNEL_RCSID(0, "$NetBSD: asc.c,v 1.5 2002/03/10 15:47:45 bjh21 Exp $");
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <uvm/uvm_extern.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <machine/bootconfig.h> /* asc_poll */
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsiconf.h>
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#include <arm/arm32/katelib.h>
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#include <dev/podulebus/podules.h>
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#include <dev/podulebus/powerromreg.h>
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#include <acorn32/podulebus/podulebus.h>
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#include <acorn32/podulebus/sbicreg.h>
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#include <acorn32/podulebus/sbicvar.h>
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#include <acorn32/podulebus/ascreg.h>
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#include <acorn32/podulebus/ascvar.h>
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void ascattach (struct device *, struct device *, void *);
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int ascmatch (struct device *, struct cfdata *, void *);
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void asc_enintr (struct sbic_softc *);
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int asc_dmaok (void *, bus_dma_tag_t, struct sbic_acb *);
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int asc_dmasetup (void *, bus_dma_tag_t, struct sbic_acb *, int);
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int asc_dmanext (void *, bus_dma_tag_t, struct sbic_acb *, int);
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void asc_dmastop (void *, bus_dma_tag_t, struct sbic_acb *);
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void asc_dmafinish (void *, bus_dma_tag_t, struct sbic_acb *);
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void asc_scsi_request (struct scsipi_channel *,
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scsipi_adapter_req_t, void *);
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int asc_intr (void *);
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void asc_minphys (struct buf *);
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void asc_dump (void);
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#ifdef DEBUG
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int asc_dmadebug = 0;
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#endif
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struct cfattach asc_ca = {
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sizeof(struct asc_softc), ascmatch, ascattach
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};
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extern struct cfdriver asc_cd;
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u_long scsi_nosync;
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int shift_nosync;
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#if ASC_POLL > 0
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int asc_poll = 0;
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#endif
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int
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ascmatch(struct device *pdp, struct cfdata *cf, void *auxp)
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{
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struct podule_attach_args *pa = (struct podule_attach_args *)auxp;
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/* Look for the card */
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/* Standard ROM, skipping the MCS card that used the same ID. */
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if (matchpodule(pa, MANUFACTURER_ACORN, PODULE_ACORN_SCSI, -1) &&
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strncmp(pa->pa_podule->description, "MCS", 3) != 0)
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return 1;
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/* PowerROM */
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if (pa->pa_product == PODULE_ALSYSTEMS_SCSI &&
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podulebus_initloader(pa) == 0 &&
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podloader_callloader(pa, 0, 0) == PRID_ACORN_SCSI1)
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return 1;
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return 0;
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}
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void
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ascattach(struct device *pdp, struct device *dp, void *auxp)
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{
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/* volatile struct sdmac *rp;*/
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struct asc_softc *sc;
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struct sbic_softc *sbic;
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struct podule_attach_args *pa;
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sc = (struct asc_softc *)dp;
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pa = (struct podule_attach_args *)auxp;
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if (pa->pa_podule_number == -1)
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panic("Podule has disappeared !");
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sc->sc_podule_number = pa->pa_podule_number;
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sc->sc_podule = pa->pa_podule;
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podules[sc->sc_podule_number].attached = 1;
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sbic = &sc->sc_softc;
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sbic->sc_enintr = asc_enintr;
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sbic->sc_dmaok = asc_dmaok;
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sbic->sc_dmasetup = asc_dmasetup;
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sbic->sc_dmanext = asc_dmanext;
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sbic->sc_dmastop = asc_dmastop;
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sbic->sc_dmafinish = asc_dmafinish;
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/* Map sbic */
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sbic->sc_sbicp.sc_sbiciot = pa->pa_iot;
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if (bus_space_map (sbic->sc_sbicp.sc_sbiciot,
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sc->sc_podule->mod_base + ASC_SBIC, ASC_SBIC_SPACE, 0,
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&sbic->sc_sbicp.sc_sbicioh))
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panic("%s: Cannot map SBIC\n", dp->dv_xname);
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sbic->sc_clkfreq = sbic_clock_override ? sbic_clock_override : 143;
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sbic->sc_adapter.adapt_dev = &sbic->sc_dev;
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sbic->sc_adapter.adapt_nchannels = 1;
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sbic->sc_adapter.adapt_openings = 7;
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sbic->sc_adapter.adapt_max_periph = 1;
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sbic->sc_adapter.adapt_ioctl = NULL;
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sbic->sc_adapter.adapt_minphys = asc_minphys;
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sbic->sc_adapter.adapt_request = asc_scsi_request;
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sbic->sc_channel.chan_adapter = &sbic->sc_adapter;
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sbic->sc_channel.chan_bustype = &scsi_bustype;
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sbic->sc_channel.chan_channel = 0;
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sbic->sc_channel.chan_ntargets = 8;
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sbic->sc_channel.chan_nluns = 8;
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sbic->sc_channel.chan_id = 7;
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/* Provide an override for the host id */
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(void)get_bootconf_option(boot_args, "asc.hostid",
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BOOTOPT_TYPE_INT, &sbic->sc_channel.chan_id);
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printf(": hostid=%d", sbic->sc_channel.chan_id);
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#if ASC_POLL > 0
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if (boot_args)
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get_bootconf_option(boot_args, "ascpoll", BOOTOPT_TYPE_BOOLEAN,
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&asc_poll);
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if (asc_poll)
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printf(" polling");
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#endif
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printf("\n");
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sc->sc_pagereg = sc->sc_podule->fast_base + ASC_PAGEREG;
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sc->sc_intstat = sc->sc_podule->fast_base + ASC_INTSTATUS;
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/* Reset the card */
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WriteByte(sc->sc_pagereg, 0x80);
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DELAY(500000);
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WriteByte(sc->sc_pagereg, 0x00);
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DELAY(250000);
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sbicinit(sbic);
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/* If we are polling only, we don't need a interrupt handler. */
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#ifdef ASC_POLL
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if (!asc_poll)
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#endif
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{
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evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
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dp->dv_xname, "intr");
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sc->sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO,
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asc_intr, sc, &sc->sc_intrcnt);
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if (sc->sc_ih == NULL)
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panic("%s: Cannot claim podule IRQ\n", dp->dv_xname);
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}
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/*
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* attach all scsi units on us
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*/
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config_found(dp, &sbic->sc_channel, scsiprint);
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}
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void
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asc_enintr(struct sbic_softc *sbicsc)
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{
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struct asc_softc *sc = (struct asc_softc *)sbicsc;
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sbicsc->sc_flags |= SBICF_INTR;
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WriteByte(sc->sc_pagereg, 0x40);
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}
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int
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asc_dmaok (void *dma_h, bus_dma_tag_t dma_t, struct sbic_acb *acb)
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{
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return 0;
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}
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int
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asc_dmasetup (void *dma_h, bus_dma_tag_t dma_t, struct sbic_acb *acb, int dir)
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{
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printf("asc_dmasetup()");
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#ifdef DDB
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Debugger();
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#else
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panic("Hit a brick wall\n");
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#endif
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return 0;
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}
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int
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asc_dmanext (void *dma_h, bus_dma_tag_t dma_t, struct sbic_acb *acb, int dir)
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{
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printf("asc_dmanext()");
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#ifdef DDB
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Debugger();
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#else
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panic("Hit a brick wall\n");
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#endif
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return 0;
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}
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void
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asc_dmastop (void *dma_h, bus_dma_tag_t dma_t, struct sbic_acb *acb)
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{
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printf("asc_dmastop\n");
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}
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void
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asc_dmafinish (void *dma_h, bus_dma_tag_t dma_t, struct sbic_acb *acb)
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{
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printf("asc_dmafinish\n");
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}
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void
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asc_dump(void)
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{
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int i;
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for (i = 0; i < asc_cd.cd_ndevs; ++i)
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if (asc_cd.cd_devs[i])
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sbic_dump(asc_cd.cd_devs[i]);
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}
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void
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asc_scsi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req,
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void *arg)
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{
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struct scsipi_xfer *xs;
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switch (req) {
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case ADAPTER_REQ_RUN_XFER:
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xs = arg;
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#if ASC_POLL > 0
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/* ensure command is polling for the moment */
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if (asc_poll)
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xs->xs_control |= XS_CTL_POLL;
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#endif
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/* printf("id=%d lun=%dcmdlen=%d datalen=%d opcode=%02x flags=%08x status=%02x blk=%02x %02x\n",
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xs->xs_periph->periph_target, xs->xs_periph->periph_lun, xs->cmdlen, xs->datalen, xs->cmd->opcode,
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xs->xs_control, xs->status, xs->cmd->bytes[0], xs->cmd->bytes[1]);*/
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default:
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}
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sbic_scsi_request(chan, req, arg);
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}
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int
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asc_intr(void *arg)
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{
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struct asc_softc *sc = arg;
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int intr;
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/* printf("ascintr:");*/
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intr = ReadByte(sc->sc_intstat);
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/* printf("%02x\n", intr);*/
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if (intr & IS_SBIC_IRQ)
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sbicintr((struct sbic_softc *)sc);
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return 0; /* Pass interrupt on down the chain */
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}
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/*
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* limit the transfer as required.
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*/
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void
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asc_minphys(struct buf *bp)
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{
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#if 0
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/*
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* We must limit the DMA xfer size
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*/
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if (bp->b_bcount > MAX_DMA_LEN) {
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printf("asc: Reducing dma length\n");
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bp->b_bcount = MAX_DMA_LEN;
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}
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#endif
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minphys(bp);
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}
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